Object appears Black while rendering ? while other objects look normal
Edit: actually my first answer was not accurate, you have an Auto Smooth enabled, in order to make your Auto Smooth work you need to go in the Properties panel > Data > Geometry Data and press the Clear Custom Split Normals Data button.

As explained here: "Your model has a custom split normal data (probably due to a normal edit modifier that has been applied or because the mesh was made with another software...) that keep some face shading in that way."